For Windows Only
- On the start menu for whatever mod pack launcher you are using check the version number in the bottom left hand corner
- Go to optfine.net and choose the corresponding version number and click download
Installation on Feed the Beast
Installation on Technic Launcher
- Go to "%APPDATA%/.techniclauncher"( type it in the "Search for Programs " on the windows start menu.
- Select a modpack from the list of folders, for this guide we shall be using voltz
Open the "bin" folder
Right click on modpack.jar and open with WinRAR or another archving tool
- Copy the files from the optfine zip into modpack.jar click ok on all messages
- Close both zips
- Launch the modpack you choose to install optfine on, in this case voltz
- Its Installed!
- If you are worried about anything going wrong, backup modpack.jar